Harold Ramis, the filmmaker behind "Caddyshack" and "Groundhog Day" and a star in "Ghostbusters," has died. He was 69.

Ramis died early Monday morning at this home outside Chicago, United Talent Agency confirmed to CBS News.

Ramis portrayed Dr. Egon Spengler in the 1984 classic, "Ghostbusters." He also spent much of his career behind the camera -- directing such films as "National Lampoon's Animal House," "Analyze This," "Analyze That" and, more recently, a few episodes of "The Office."

His other acting credits include "Knocked Up," "The Last Kiss" and "As Good as it Gets."